feat: Add typescript examples using openfigi-sdk and openfigi-mcp

[viktorlarsson]

This pull request adds two new example projects demonstrating how to use the openfigi-sdk and openfigi-mcp packages with the OpenFIGI API. Each project includes a README with setup instructions, a Dockerfile for containerization, and relevant configuration files. The openfigi-sdk example provides a TypeScript script showcasing API usage, while the openfigi-mcp example demonstrates setting up an MCP server for integration with AI assistants.

OpenFIGI SDK Example:

• Added a TypeScript example script (example.ts) demonstrating identifier validation, searching by ISIN/ticker, batch mapping, and authenticated client usage with the openfigi-sdk package.
• Included a comprehensive README.md with setup, usage instructions, and Docker integration details.
• Added a Dockerfile for running the example in a containerized environment.
• Provided a package.json with dependencies and scripts for running the example.
• Updated .gitignore to exclude node_modules/.

OpenFIGI MCP Server Example:

• Added a README.md explaining how to run the openfigi-mcp server, configure it for Claude Desktop/Code, and use Docker for deployment.
• Added a Dockerfile for building and running the MCP server as a container.
• Provided a package.json with the necessary dependency and start script.
• Updated .gitignore to exclude node_modules/.